diff --git a/crates/erg_compiler/lib/pystd/email.d/__init__.d.er b/crates/erg_compiler/lib/pystd/email.d/__init__.d.er
new file mode 100644
index 000000000..6a3bdf8e4
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/__init__.d.er
@@ -0,0 +1,7 @@
+.contentmanager = pyimport "./contentmanager"
+.errors = pyimport "./errors"
+.generator = pyimport "./generator"
+.headerregistry = pyimport "./headerregistry"
+.message = pyimport "./message"
+.parser = pyimport "./parser"
+.policy = pyimport "./policy"
diff --git a/crates/erg_compiler/lib/pystd/email.d/contentmanager.d.er b/crates/erg_compiler/lib/pystd/email.d/contentmanager.d.er
new file mode 100644
index 000000000..9816f4dc7
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/contentmanager.d.er
@@ -0,0 +1,5 @@
+{Message!;} = pyimport "./message"
+
+.ContentManager: ClassType
+
+.set_text_content!: (msg: Message!, string: Str, subtype := Str) => NoneType
diff --git a/crates/erg_compiler/lib/pystd/email.d/errors.d.er b/crates/erg_compiler/lib/pystd/email.d/errors.d.er
new file mode 100644
index 000000000..2382a4453
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/errors.d.er
@@ -0,0 +1,74 @@
+.MessageError: ClassType
+.MessageError <: Exception
+
+.MessageParseError: ClassType
+.MessageParseError <: MessageError
+
+.HeaderParseError: ClassType
+.HeaderParseError <: MessageParseError
+
+.BoundaryError: ClassType
+.BoundaryError <: MessageParseError
+
+.MultipartConversionError: ClassType
+.MultipartConversionError <: MessageError
+
+.CharsetError: ClassType
+.CharsetError <: MessageError
+
+.MessageDefect: ClassType
+.MessageDefect <: ValueError
+
+.NoBoundaryInMultipartDefect: ClassType
+.NoBoundaryInMultipartDefect <: MessageDefect
+
+.StartBoundaryNotFoundDefect: ClassType
+.StartBoundaryNotFoundDefect <: MessageDefect
+
+.ClosedBoundaryNotFoundDefect: ClassType
+.ClosedBoundaryNotFoundDefect <: MessageDefect
+
+.FirstHeaderLineIsContinuationDefect: ClassType
+.FirstHeaderLineIsContinuationDefect <: MessageDefect
+
+.MisplacedEnvelopeHeaderDefect: ClassType
+.MisplacedEnvelopeHeaderDefect <: MessageDefect
+
+.MultipartInvariantViolationDefect: ClassType
+.MultipartInvariantViolationDefect <: MessageDefect
+
+.InvalidMultipartContentTransferEncodingDefect: ClassType
+.InvalidMultipartContentTransferEncodingDefect <: MessageDefect
+
+.UndecodableBytesDefect: ClassType
+.UndecodableBytesDefect <: MessageDefect
+
+.InvalidBase64PaddingDefect: ClassType
+.InvalidBase64PaddingDefect <: MessageDefect
+
+.InvalidBase64CharactersDefect: ClassType
+.InvalidBase64CharactersDefect <: MessageDefect
+
+.InvalidBase64LengthDefect: ClassType
+.InvalidBase64LengthDefect <: MessageDefect
+
+.HeaderDefect: ClassType
+.HeaderDefect <: MessageDefect
+
+.InvalidHeaderDefect: ClassType
+.InvalidHeaderDefect <: HeaderDefect
+
+.HeaderMissingRequiredValue: ClassType
+.HeaderMissingRequiredValue <: HeaderDefect
+
+.NonPrintableDefect: ClassType
+.NonPrintableDefect <: HeaderDefect
+
+.ObsoleteHeaderDefect: ClassType
+.ObsoleteHeaderDefect <: HeaderDefect
+
+.NonASCIILocalPartDefect: ClassType
+.NonASCIILocalPartDefect <: HeaderDefect
+
+.InvalidDateDefect: ClassType
+.InvalidDateDefect <: HeaderDefect
diff --git a/crates/erg_compiler/lib/pystd/email.d/generator.d.er b/crates/erg_compiler/lib/pystd/email.d/generator.d.er
new file mode 100644
index 000000000..d82cfc754
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/generator.d.er
@@ -0,0 +1,7 @@
+.Generator: ClassType
+
+.BytesGenerator: ClassType
+.BytesGenerator <: .Generator
+
+.DecodeGenerator: ClassType
+.DecodeGenerator <: .Generator
diff --git a/crates/erg_compiler/lib/pystd/email.d/headerregistry.d.er b/crates/erg_compiler/lib/pystd/email.d/headerregistry.d.er
new file mode 100644
index 000000000..5ad6c5376
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/headerregistry.d.er
@@ -0,0 +1,39 @@
+.Address: ClassType
+
+.Group: ClassType
+
+.BaseHeader: ClassType
+
+.UnstructuredHeader: ClassType
+
+.UniqueUnstructuredHeader: ClassType
+.UniqueUnstructuredHeader <: .UnstructuredHeader
+
+.DateHeader: ClassType
+
+.AddressHeader: ClassType
+
+.UniqueAddressHeader: ClassType
+.UniqueAddressHeader <: .AddressHeader
+
+.SingleAddressHeader: ClassType
+.SingleAddressHeader <: .AddressHeader
+
+.UniqueSingleAddressHeader: ClassType
+.UniqueSingleAddressHeader <: .SingleAddressHeader
+
+.MIMEVersionHeader: ClassType
+
+.ParameterizedMIMEHeader: ClassType
+
+.ContentTypeHeader: ClassType
+.ContentTypeHeader <: .ParameterizedMIMEHeader
+
+.ContentDispositionHeader: ClassType
+.ContentDispositionHeader <: .ParameterizedMIMEHeader
+
+.ContentTransferEncodingHeader: ClassType
+
+.MessageIDHeader: ClassType
+
+.Headerregistry: ClassType
diff --git a/crates/erg_compiler/lib/pystd/email.d/message.d.er b/crates/erg_compiler/lib/pystd/email.d/message.d.er
new file mode 100644
index 000000000..a44f2f988
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/message.d.er
@@ -0,0 +1 @@
+.Message!: ClassType
diff --git a/crates/erg_compiler/lib/pystd/email.d/parser.d.er b/crates/erg_compiler/lib/pystd/email.d/parser.d.er
new file mode 100644
index 000000000..985d3092d
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/parser.d.er
@@ -0,0 +1,6 @@
+.Parser: ClassType
+.HeaderParser: ClassType
+.HeaderParser <: .Parser
+.BytesParser: ClassType
+.BytesHeaderParser: ClassType
+.BytesHeaderParser <: .BytesParser
diff --git a/crates/erg_compiler/lib/pystd/email.d/policy.d.er b/crates/erg_compiler/lib/pystd/email.d/policy.d.er
new file mode 100644
index 000000000..d22cb7698
--- /dev/null
+++ b/crates/erg_compiler/lib/pystd/email.d/policy.d.er
@@ -0,0 +1,7 @@
+.EmailPolicy: ClassType
+
+.default: .EmailPolicy
+.strict: .EmailPolicy
+.SMTP: .EmailPolicy
+.HTTP: .EmailPolicy
+.SMTPUTF8: .EmailPolicy