78 Top Customer.io Alternatives in 2025
Reviews, comparison, screenshots and more for the 78 top alternatives to Customer.io email service.
مقارنة خدمات البريد الإلكتروني
| Email Service | التسعير | تخزين | Attachments | مفتوح المصدر | التشفير المعزول | Unlimited Domains | أسماء مستعارة غير محدودة | TTI | SMTP | IMAP | POP3 | API | E2EE | OpenPGP | WKD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Forward Email⭐ SuggestedEmail for everyone | $3/mo | 10 GB pooled | 50 MB | نعم | نعم | نعم | نعم | TTI | نعم | نعم | نعم | نعم | ⚠️ Opt-in | نعم | نعم |
Customer.ioSend messages people actually want to receive using real-time customer data | $100/mo | لا Customer.io does not support storage | 2 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
GmailSecure, smart, and easy to use email | $7.20/mo | 30 GB pooled | 25 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | نعم | لا | لا | لا |
PoboxUnlock your email identity | $50/yr | 50 GB | 25 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
NamecheapDo more with Professional Email, for less | $14.88/yr | 5 GB | 20 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
123 RegProfessional email that shows you mean business | £35.88/yr | 10 GB | 30 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
Microsoft 365Grow your business with Microsoft 365 | $72/yr | 1000 GB pooled | 150 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | ⚠️ Microsoft 365 does not support PGP/MIME | لا |
Mail.comFree email – Customized to your needs | $29.99/yr | 65 GB | 100 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | نعم | لا |
GoDaddyCreate a professional email using your domain | $35.88/yr | 10 GB | 20 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
GandiWe manage over 780,000 email addresses on our email servers, why not yours? | $3.99/mo | 10 GB | 25 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
GMXCreate a free email account fast | $29.99/yr | 65 GB | 100 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | نعم | لا |
FastmailFast, private email that’s just for you | $3/mo | 2 GB | 70 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | ⚠️ Fastmail does support PGP, but not in their webmail; see this blog post for insight | لا |
AOLAOL Mail is a free web-based email service provided by AOL, a division of Yahoo! Inc. | $12/yr | 1000 GB | 25 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
PosteoGreen, secure, ad-free | €1/mo | 2 GB | 50 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | ⚠️ Opt-in | نعم | نعم |
Proton MailSecure email that protects your privacy | $3.99/mo | 15 GB | 25 MB | ❌ Proton Mail claims to be open-source, but their back-end actually is closed source | لا | لا | لا | لا | ❌ Requires you to download Proton Mail Bridge and forces vendor lock-in | ❌ Requires you to download Proton Mail Bridge and forces vendor lock-in | ❌ Proton Mail does not support POP3 | لا | ⚠️ Proton Mail rewrites your emails | نعم | نعم |
Spam ScannerSpam Scanner is the best anti-spam, email filtering, and phishing prevention service | Free (built-in to Forward Email) | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
EgressStop more advanced phishing attacks | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
MailinblackYour cybersecurity is our job | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
AltospamAntispam, Antivirus & Anti-Phishing Software | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
HeimdalOne Platform. Total Security. | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Check Point AvananPrevent Phishing before the Inbox with Email Security from Check Point | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
TrustifiProtect Your Business Emails with AI-Powered Security | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
LibraesvaEmail Security, Email Archiving, Phishing Awareness, DMARC | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
OOPSpamAutomate your Spam and Abuse Detection | $49/mo | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
MailfenceSecure and private email | $3.50/mo | 10 GB | 50 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | ⚠️ Opt-in | نعم | نعم |
DuoCircleProtect Email Against Phishing, Spam and Malware | Requires you to talk to a sales team | Requires 3rd party | 50 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
N‑able Mail AssureEmail protection to help you secure and scale | Requires you to talk to a sales team | Requires 3rd party | Depends on inbound/outbound (e.g. 10 MB) | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Vade SecureSimple, Sophisticated Email Security Powered by AI | Requires you to talk to a sales team | Requires 3rd party | 50 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Spam HeroCloud-Based Spam Filtering | $8/mo | Requires 3rd party | 50 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Abnormal SecurityCloud Email Security - Block Malicious Email Attacks | Requires you to talk to a sales team | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
DarktraceCyber security that learns you | Requires you to talk to a sales team (according to Amazon AWS Marketplace it may cost upwards of $30,000/mo) | Requires 3rd party | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
FortinetGlobal Leader of Cybersecurity Solutions and Services | Requires you to talk to a sales team | Unknown | Unknown | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Cisco Secure Email DefenseAdvanced protection to safeguard your inboxes | Requires you to talk to a sales team | Unknown | 100 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
BarracudaCybersecurity Solutions: Email, Apps, Network, Data | Requires you to talk to a sales team | Unknown | 100 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
SpamTitanEmail Security Solutions | Rrequires you to talk to a sales team | Unknown | 150 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
mailbox.orgPrivacy made in Germany | €3/mo | 10 GB | 100 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | نعم | نعم |
ProofpointThe leader in human-centric cybersecurity | See Proofpoint plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month) | Unknown | 150 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
MimecastEmail & Collaboration Security | See Mimecast plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month) | Unknown | 200 MB | لا | لا | لا | لا | لا | ❌ Requires 3rd party | ❌ Requires 3rd party | ❌ Requires 3rd party | نعم | لا | لا | لا |
Apple Mail (iCloud)Private, secure, and personal email from Apple | $0.99 | 50 GB pooled | 20 MB | لا | لا | لا | لا | لا | نعم | نعم | ❌ iCloud does not support POP3 | لا | لا | لا | لا |
ResendEmail for developers | $20/mo | لا Resend does not support storage | 40 MB | لا | لا | نعم | نعم | لا | نعم | لا | لا | نعم | لا | لا | لا |
PostmarkThe email delivery service that people actually like | $15/mo | لا Postmark does not support storage | 10 MB | لا | لا | لا | لا | TTI | نعم | لا | لا | نعم | لا | لا | لا |
ImprovMXCreate free email aliases for your domain name | $9/mo | لا ImprovMX does not support storage | 50 MB | لا | لا | لا | لا | TTI | نعم | لا | لا | نعم | لا | لا | لا |
Get ResponseAn affordable, easy platform to send emails, grow your list, and automate communication | $187.20/yr | لا Get Response does not support storage | 0.4 MB | لا | لا | نعم | نعم | لا | نعم | لا | لا | نعم | لا | لا | لا |
ActiveCampaignPostmark, the leading service for transactional email, is now part of ActiveCampaign | $15/mo | لا ActiveCampaign does not support storage | 10 MB | لا | لا | لا | لا | TTI | نعم | لا | لا | نعم | لا | لا | لا |
Amazon WorkmailAmazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications | $4/mo | 50 GB | 25 MB | لا | لا | لا | لا | لا | نعم | نعم | لا | لا | لا | لا | لا |
SimpleLoginReceive and send emails anonymously | $4/mo | لا SimpleLogin does not support storage | 25 MB | نعم | لا | نعم | نعم | لا | لا | لا | لا | لا | ⚠️ Opt-in | نعم | لا |
StartmailPrivate email you can trust | $7/mo | 20 GB | 25 MB | لا | ❌ Startmail claims to use a User Vault, but this statement has not been audited and their source code is closed-source | لا | لا | لا | نعم | نعم | نعم | لا | ⚠️ Supported if both sender and recipient are using OpenPGP | ⚠️ Supports OpenPGP, but does not support WKD | لا |
YahooYahoo Mail Plus helps you gain the upper hand on clutter in your inbox | $5/mo | 5000 GB | 25 MB | لا | لا | لا | لا | لا | ❌ No longer supported | ❌ No longer supported | ❌ No longer supported | لا | لا | لا | لا |
AT&TAT&T Mail is now Yahoo Mail | $5/mo | 5000 GB | 25 MB | لا | لا | لا | لا | لا | ❌ No longer supported | ❌ No longer supported | ❌ No longer supported | لا | لا | لا | لا |
SMTP.comTransactional and email relay API | $25/mo | لا SMTP.com does not support storage | 15 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
SendgridGet your emails to the inbox—where they belong | $19.95/mo | لا Sendgrid does not support storage | 30 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
SMTP2GOLike a first-class courier, for email | $10/mo | لا SMTP2GO does not support storage | 50 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MessageBirdOmnichannel automation platform for APIs, service & marketing | $20/mo | لا MessageBird does not support storage | 100 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MailtrapEmail Delivery Platform that delivers just in time. Great for businesses and individuals | $10/mo | لا Mailtrap does not support storage | 10 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MailjetEffortlessly create and deploy marketing and transactional emails in one place | $15/mo | لا Mailjet does not support storage | 15 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MailgunFlexible, scalable, and results driven email sending platform | $35/mo | لا Mailgun does not support storage | 25 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MailerSendIntuitive email API and SMTP | $288/yr | لا MailerSend does not support storage | 25 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MigaduThe Missing Email | $9/mo | 30 GB | Unknown | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | ⚠️ Not encrypted | ⚠️ Does not allow you to upload OpenPGP key | لا |
HubSpotGrow better with HubSpot | $890/mo (varies, some plans do not include SMTP) | لا HubSpot does not support storage | 20 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
Elastic EmailTake your email marketing and email delivery to the next level | $9/mo | لا Elastic Email does not support storage | 10 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
BrevoThe most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more | $15/mo | لا Brevo does not support storage | 20 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
Amazon Simple Email Service (SES)Get reliable, scalable email to communicate with customers at the lowest industry prices | $X/mo; varies, using shared IP's from SES are known to have negative effect on deliverability | لا Amazon Simple Email Service (SES) does not support storage | 10 MB | لا | لا | لا | لا | لا | نعم | لا | لا | نعم | لا | لا | لا |
MandrillReach inboxes when it matters most | $33/mo | لا Mandrill does not support storage | 25 MB | لا | لا | لا | لا | لا | ❌ Requires paid add-on for Mandrill of at least $20/mo | لا | لا | نعم | لا | لا | لا |
MailchimpTurn Emails into Revenue | $33/mo | لا Mailchimp does not support storage | 25 MB | لا | لا | لا | لا | لا | ❌ Requires paid add-on for Mandrill of at least $20/mo | لا | لا | نعم | لا | لا | لا |
addy.ioProtect your real email address using email aliases | $4/mo | لا addy.io does not support storage | 25 MB | نعم | لا | لا | نعم | لا | لا | لا | لا | لا | لا | لا | لا |
TutanotaSecure, green and ad-free. Email to feel good about | €36/yr | 20 GB | 25 MB | ❌ Tutanota claims to be open-source, but their back-end is actually closed-source | لا | لا | لا | لا | لا | لا | لا | لا | لا | ⚠️ Tutanota does not support PGP | لا |
IntercomThe only AI customer service solution you need | $39/mo | لا Intercom does not support storage | 20 MB | لا | لا | لا | لا | لا | لا | لا | لا | ❌ See blog post | لا | لا | لا |
ZohoSecure business email for your organization | $12/yr | 5 GB | 20 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
HEYWe finally fixed your email + calendar! | $99/yr + $12/mo per user | 100 GB | HEY does not use regular email attachments, which also prevents them from being encrypted with PGP | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
HelpCrunchCustomer service software that covers all your business needs | $23/mo (for the mininum plan to send emails) | لا HelpCrunch does not support storage | 10 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
OlarkCustomers want to talk to you. Make it easy | $29/mo | لا Olark does not support storage | 50 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
ZendeskUnlock the power of customer experiences | $69/mo | لا Zendesk does not support storage | 50 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
Help ScoutOne unified platform | $20/mo | لا Help Scout does not support storage | 10 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
Crisp ChatGive your customer experience a human touch | $25/mo | لا Crisp Chat does not support storage | 10 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
Drift ChatCreate enduring customer relationships | $2,500/mo billed annually ($30,000/yr) | لا Drift Chat does not support storage | 25 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
Cloudflare Email RoutingEasily create addresses and route emails for free | $25/mo | لا Cloudflare Email Routing does not support storage | 25 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
KlaviyoPower smarter digital relationships | $20/mo | لا Klaviyo does not support storage | 0 MB | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا | لا |
YandexAn email address with your company's name is an easy way to stand out | ₽2988/yr | 100 GB | 30 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
TitanThe customer-centric business email service that helps you grow | Undisclosed | Undisclosed | 30 MB | لا | لا | لا | لا | لا | نعم | نعم | نعم | لا | لا | لا | لا |
Email Service Screenshots
Forward Email
Forward Email is an open-source email service. According to their website: Email for everyone
Customer.io
Customer.io is a closed-source email service. According to their website: Send messages people actually want to receive using real-time customer data
Gmail
Gmail is a closed-source email service. Their official description reads: Secure, smart, and easy to use email
Pobox
Pobox is a closed-source email service. Their official description reads: Unlock your email identity
Namecheap
Namecheap is a closed-source email service. According to their website: Do more with Professional Email, for less
123 Reg
123 Reg is a closed-source email service. Their website says: Professional email that shows you mean business
Microsoft 365
Microsoft 365 is a closed-source email service. Their official description reads: Grow your business with Microsoft 365
Mail.com
Mail.com is a closed-source email service. Their website says: Free email – Customized to your needs
GoDaddy
GoDaddy is a closed-source email service. Their website says: Create a professional email using your domain
Gandi
Gandi is a closed-source email service. According to their website: We manage over 780,000 email addresses on our email servers, why not yours?
GMX
GMX is a closed-source email service. Their official description reads: Create a free email account fast
Fastmail
Fastmail is a closed-source email service. According to their website: Fast, private email that’s just for you
AOL
AOL is a closed-source email service. Their official description reads: AOL Mail is a free web-based email service provided by AOL, a division of Yahoo! Inc.
Posteo
Posteo is a closed-source email service. Their official description reads: Green, secure, ad-free
Proton Mail
Proton Mail is a closed-source email service. Their official description reads: Secure email that protects your privacy
Spam Scanner
Spam Scanner is a closed-source email service. Their website says: Spam Scanner is the best anti-spam, email filtering, and phishing prevention service
Egress
Egress is a closed-source email service. Their website says: Stop more advanced phishing attacks
Mailinblack
Mailinblack is a closed-source email service. Its description from its website is: Your cybersecurity is our job
Altospam
Altospam is a closed-source email service. Its description from its website is: Antispam, Antivirus & Anti-Phishing Software
Heimdal
Heimdal is a closed-source email service. According to their website: One Platform. Total Security.
Check Point Avanan
Check Point Avanan is a closed-source email service. Their official description reads: Prevent Phishing before the Inbox with Email Security from Check Point
Trustifi
Trustifi is a closed-source email service. Their website says: Protect Your Business Emails with AI-Powered Security
Libraesva
Libraesva is a closed-source email service. According to their website: Email Security, Email Archiving, Phishing Awareness, DMARC
OOPSpam
OOPSpam is a closed-source email service. Their official description reads: Automate your Spam and Abuse Detection
Mailfence
Mailfence is a closed-source email service. Their official description reads: Secure and private email
DuoCircle
DuoCircle is a closed-source email service. Its description from its website is: Protect Email Against Phishing, Spam and Malware
N‑able Mail Assure
N‑able Mail Assure is a closed-source email service. According to their website: Email protection to help you secure and scale
Vade Secure
Vade Secure is a closed-source email service. According to their website: Simple, Sophisticated Email Security Powered by AI
Spam Hero
Spam Hero is a closed-source email service. Its description from its website is: Cloud-Based Spam Filtering
Abnormal Security
Abnormal Security is a closed-source email service. Their website says: Cloud Email Security - Block Malicious Email Attacks
Darktrace
Darktrace is a closed-source email service. Their website says: Cyber security that learns you
Fortinet
Fortinet is a closed-source email service. Their official description reads: Global Leader of Cybersecurity Solutions and Services
Cisco Secure Email Defense
Cisco Secure Email Defense is a closed-source email service. Its description from its website is: Advanced protection to safeguard your inboxes
Barracuda
Barracuda is a closed-source email service. Their website says: Cybersecurity Solutions: Email, Apps, Network, Data
SpamTitan
SpamTitan is a closed-source email service. Their official description reads: Email Security Solutions
mailbox.org
mailbox.org is a closed-source email service. Their website says: Privacy made in Germany
Proofpoint
Proofpoint is a closed-source email service. Their website says: The leader in human-centric cybersecurity
Mimecast
Mimecast is a closed-source email service. Their official description reads: Email & Collaboration Security
Apple Mail (iCloud)
Apple Mail (iCloud) is a closed-source email service. Their website says: Private, secure, and personal email from Apple
Resend
Resend is a closed-source email service. Their website says: Email for developers
Postmark
Postmark is a closed-source email service. Their official description reads: The email delivery service that people actually like
ImprovMX
ImprovMX is a closed-source email service. According to their website: Create free email aliases for your domain name
Get Response
Get Response is a closed-source email service. According to their website: An affordable, easy platform to send emails, grow your list, and automate communication
ActiveCampaign
ActiveCampaign is a closed-source email service. According to their website: Postmark, the leading service for transactional email, is now part of ActiveCampaign
Amazon Workmail
Amazon Workmail is a closed-source email service. According to their website: Amazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications
SimpleLogin
SimpleLogin is an open-source email service. Their official description reads: Receive and send emails anonymously
Startmail
Startmail is a closed-source email service. Its description from its website is: Private email you can trust
Yahoo
Yahoo is a closed-source email service. Its description from its website is: Yahoo Mail Plus helps you gain the upper hand on clutter in your inbox
AT&T
AT&T is a closed-source email service. According to their website: AT&T Mail is now Yahoo Mail
SMTP.com
SMTP.com is a closed-source email service. Its description from its website is: Transactional and email relay API
Sendgrid
Sendgrid is a closed-source email service. Their official description reads: Get your emails to the inbox—where they belong
SMTP2GO
SMTP2GO is a closed-source email service. Its description from its website is: Like a first-class courier, for email
MessageBird
MessageBird is a closed-source email service. Its description from its website is: Omnichannel automation platform for APIs, service & marketing
Mailtrap
Mailtrap is a closed-source email service. Their official description reads: Email Delivery Platform that delivers just in time. Great for businesses and individuals
Mailjet
Mailjet is a closed-source email service. According to their website: Effortlessly create and deploy marketing and transactional emails in one place
Mailgun
Mailgun is a closed-source email service. According to their website: Flexible, scalable, and results driven email sending platform
MailerSend
MailerSend is a closed-source email service. Its description from its website is: Intuitive email API and SMTP
Migadu
Migadu is a closed-source email service. Their official description reads: The Missing Email
HubSpot
HubSpot is a closed-source email service. Its description from its website is: Grow better with HubSpot
Elastic Email
Elastic Email is a closed-source email service. Their official description reads: Take your email marketing and email delivery to the next level
Brevo
Brevo is a closed-source email service. According to their website: The most approachable CRM to cultivate lasting customer relationships across Email, SMS, Chat and more
Amazon Simple Email Service (SES)
Amazon Simple Email Service (SES) is a closed-source email service. Their website says: Get reliable, scalable email to communicate with customers at the lowest industry prices
Mandrill
Mandrill is a closed-source email service. Their official description reads: Reach inboxes when it matters most
Mailchimp
Mailchimp is a closed-source email service. According to their website: Turn Emails into Revenue
addy.io
addy.io is an open-source email service. Their website says: Protect your real email address using email aliases
Tutanota
Tutanota is a closed-source email service. According to their website: Secure, green and ad-free. Email to feel good about
Intercom
Intercom is a closed-source email service. Their website says: The only AI customer service solution you need
Zoho
Zoho is a closed-source email service. Their official description reads: Secure business email for your organization
HEY
HEY is a closed-source email service. According to their website: We finally fixed your email + calendar!
HelpCrunch
HelpCrunch is a closed-source email service. According to their website: Customer service software that covers all your business needs
Olark
Olark is a closed-source email service. Their official description reads: Customers want to talk to you. Make it easy
Zendesk
Zendesk is a closed-source email service. Their website says: Unlock the power of customer experiences
Help Scout
Help Scout is a closed-source email service. Its description from its website is: One unified platform
Crisp Chat
Crisp Chat is a closed-source email service. Its description from its website is: Give your customer experience a human touch
Drift Chat
Drift Chat is a closed-source email service. According to their website: Create enduring customer relationships
Cloudflare Email Routing
Cloudflare Email Routing is a closed-source email service. Their website says: Easily create addresses and route emails for free
Klaviyo
Klaviyo is a closed-source email service. Its description from its website is: Power smarter digital relationships
Yandex
Yandex is a closed-source email service. Their official description reads: An email address with your company's name is an easy way to stand out
Titan
Titan is a closed-source email service. According to their website: The customer-centric business email service that helps you grow
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