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Scalable email delivery for transactional emailSendGrid transparently handles DKIM, SPF, ISP rate limits, content inspection, bounces, and spam reports to help users achieve higher deliverability. SendGrid integrates in minutes by just changing three SMTP settings.

Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your website or application.

SendinBlue empowers businesses to build and grow relationships through marketing automation, marketing and transactional emails, and SMS messages.

Elastic Email offers an SMTP Relay, HTTP API, and fully featured browser based UI for managing marketing and transaction email.

Cloud Emailing by Mailjet. Create, send and track your marketing and transactional emails. Easy SMTP integration & cheap rates: boost your deliverability now!

Send emails and know when they were opened. Keep detaile email logs to who they were sent and when. A memo system to help organizations notify thier employees and keep everyone on the same page. Simple and easy to use email memo service.

SMTP2GO is an email service provider, performing the task of reliably delivering transactional and marketing emails, and providing reporting tools to track and visualize what is happening with outgoing emails.

turboSMTP is a world-leading SMTP provider.Our outgoing mail server guarantees secure SMTP relays and it's ideal to send transactional emails. It also provides an amazing SMTP API for developers of cloud applications and a free SMTP server service.

Smart SMTP server for email marketing. Personal server distribution, automatically results in 5 minutes, their ' senders, automatic replies, the statistics in real-time and friendly support for each

Get 3 months free "Unlimited Transactional Emails" with Pepipost.

CloudMailin allows to receive any volume of incoming email. You are given an email address that will forward any incoming message to your app, as an HTTP POST, within milliseconds. You can also seamlessly check the delivery status of each of your incoming emails via the dashboard, bounce emails that you do not wish to receive and use your own domain name.

JangoSMTP lets you send transactional emails via SMTP or API. It's the first transactional email service to offer open and click tracking.

Aspose.Email for Android API enables developers to design Android applications for managing & manipulating Outlook email file formats without using MS Outlook. It provides tools to create, read & convert Outlook MSG, PST, EML, EMLX, OST & MHT file formats. It manages recipients, subject, message body, attachments in MSG documents. It creates & save appointments in draft format, extract & save calendar items from a PST, add Mapi Items such as Messages, Contacts, Notes, Journals & Tasks to a PST. »