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Outbound Send Rate Limits for Free Email Providers (AOL, Hotmail, Yahoo, Lycos, Gmail)

Discussion in 'BlackHat Lounge' started by crazyflx, Dec 15, 2009.

  1. crazyflx

    crazyflx Elite Member

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    I've been seeing/wondering a lot about this lately, and decided to do some digging on this, and I came across what I'll copy and paste below. You'll notice that only one of the email providers mentioned in the subject line has an hourly expiration on outbound emails (yahoo mail). The rest all have daily expiration rates. Here you go:

    Google Gmail Email Send Rate Limit & Restrictions

    The following restrictions apply when sending emails from a Google Gmail account:
    • Gmail email send limit - no more than 500 recipients per message for the Gmail web interface, or max 100 recipients if you are using an email client software.

    • Gmail other SMTP limits - outgoing messages sent via Google Gmail can not exceed 10Mb per email (including attachments)


    • Google Mail SMTP restriction expiry method - the restriction is automatically removed within 24 hours after the limit was reached.


    MSN Hotmail Email Send Rate Limit & Restrictions

    The following restrictions apply when sending emails from a Hotmail account:
    • Hotmail email send limit - no more than 100 recipients per day.

    • Hotmail other SMTP limits - outgoing messages sent via Hotmail can not exceed 10Mb per email (including attachments)


    Yahoo Mail - Email Send Rate Limits & Other Email Restrictions

    The following restrictions apply when sending emails from a Yahoo Mail account:
    • Yahoo Mail email send limit - no more than 100 emails or recipients per hour

    • Yahoo Mail other SMTP limits - max 10Mb per message for the free Yahoo Mail Service, or 20Mb per message for Yahoo! Mail Plus


    • Yahoo Mail SMTP restriction expiry method - N/A


    Lycos Mail - Email Send Limits & Restrictions

    The following restrictions apply when sending emails from a Lycos Mail account:
    • Lycos Mail email send limit - max 25 recipients per message and max 250 emails per day

    • Lycos Mail other SMTP limits - Lycos Mail does not have a limit to the attachment file size at this time.



    AOL Email Send (Rate) Limits

    AOL imposes a rate limit on an AOL member when a member exceeds the acceptable number of email messages sent in a given time period. The following restrictions apply when sending emails from an AOL connection:
    • AOL email send limit - no more than 100 recipients per message or 500 recipients per connection

    • AOL other SMTP limits - max 16mb per message


    • AOL SMTP restriction expiry method - N/A
     
  2. GreenDolla

    GreenDolla Regular Member

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    this will be helpful to noobs like me thanks!!
     
  3. oyeah22

    oyeah22 Power Member

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    Thanks i was actually wondering about this.
    Posted via Mobile Device
     
  4. daavid3

    daavid3 Newbie

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    Does anybody know what the sending limit is TO the these isp's and other major isp's?
     
  5. aradul

    aradul Newbie

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    This is great info, but can someone please explain to a noob like me what does the 500 recipients per connection mean? I mean as far as I understand it would mean that you can send emails to 500 recipients, then log out and after you log in another 500 ? :eek:

    Sorry to ask this but I saw different responses in different places and I'm still learning.